Designing Basic Blocks of Fpga Cells with the Current-mode Gates

The paper deals with the problem of designing mixed programmable analogue-digital circuits on a single die, and in particularly, with the problem of designing FPGA cells with current-mode gates novel digital gates operating with constant, continuous power supply current. Based on the proposed approaches to minimizing logic functions and designing digital current – mode circuits, the current-mode prototypes of several digital circuits as well as basic blocks of FPGA cells are designed. The obtained circuits are characterized by smaller hardware overheads in comparison with the similar circuits based on the classical voltage type of gates. They have been realized as a part of the full-custom ASIC CMOS-chip and verified. Testing results prove the possibility of realization of field programmable mixed analog-digital arrays on a single die.